# Ad creative specs checker > Pick a platform to see recommended aspect ratios, durations, safe zones, and UGC export tips for TikTok, Instagram Reels, Meta placements, and YouTube Shorts — so AI influencer creatives ship format-ready. ## Category Reference This is a free interactive tool on poseberry. Use it in the browser with no account required. Generation credits are only spent inside the product. ## Why specs matter for UGC performance Wrong crops kill hooks. Text in unsafe zones gets covered by UI. Vertical-first platforms punish 16:9 letterboxing. Exporting to the native frame is a free conversion upgrade before you touch media bidding. ## Platforms covered - TikTok in-feed ads and organic-style vertical - Instagram Reels, Feed, and Stories framing - Meta (Facebook/Instagram) advantage+ style placements overview - YouTube Shorts vertical specs ## How to use with AI influencers ## FAQs ### Are these official platform specs? They are practical marketing defaults curated for 2026 planning. Always confirm critical campaigns against current platform help centers before large spends. ### Should I make one master size for all platforms? Prefer native 9:16 for Reels/TikTok/Shorts first. Recrop for feed placements after you know a concept works. ### What length works best for UGC ads? Many winners live in 6–15 seconds for hooks and demos. Longer can work for storytelling, but test short first. ### Do still images still work vs video? Yes — especially for Meta feeds and rapid concept testing. Video often wins on TikTok/Reels, but static UGC remains a valid test lane. ## Next step Create consistent AI influencer stills and short video sized for the platforms you actually run. - Generate platform-ready UGC: https://poseberry.com/register ## Links - Interactive tool: https://poseberry.com/tools/ad-creative-specs - Markdown: https://poseberry.com/tools/ad-creative-specs.md - All tools: https://poseberry.com/tools.md - Models: https://poseberry.com/models.md - Pricing: https://poseberry.com/pricing.md